/////////*
//////// * Copyright 2007 ZXing authors
//////// *
//////// * Licensed under the Apache License, Version 2.0 (the "License");
//////// * you may not use this file except in compliance with the License.
//////// * You may obtain a copy of the License at
//////// *
//////// *      http://www.apache.org/licenses/LICENSE-2.0
//////// *
//////// * Unless required by applicable law or agreed to in writing, software
//////// * distributed under the License is distributed on an "AS IS" BASIS,
//////// * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//////// * See the License for the specific language governing permissions and
//////// * limitations under the License.
//////// */
////////
////////package com.google.zxing.datamatrix.decoder;
////////
////////import com.google.zxing.ChecksumException;
////////import com.google.zxing.FormatException;
////////import com.google.zxing.common.BitMatrix;
////////import com.google.zxing.common.DecoderResult;
////////import com.google.zxing.common.reedsolomon.GenericGF;
////////import com.google.zxing.common.reedsolomon.ReedSolomonDecoder;
////////import com.google.zxing.common.reedsolomon.ReedSolomonException;
////////
/////////**
//////// * <p>The main class which implements Data Matrix Code decoding -- as opposed to locating and extracting
//////// * the Data Matrix Code from an image.</p>
//////// *
//////// * @author bbrown@google.com (Brian Brown)
//////// */
////////public final class Decoder {
////////
////////  private final ReedSolomonDecoder rsDecoder;
////////
////////  public Decoder() {
////////    rsDecoder = new ReedSolomonDecoder(GenericGF.DATA_MATRIX_FIELD_256);
////////  }
////////
////////  /**
////////   * <p>Convenience method that can decode a Data Matrix Code represented as a 2D array of booleans.
////////   * "true" is taken to mean a black module.</p>
////////   *
////////   * @param image booleans representing white/black Data Matrix Code modules
////////   * @return text and bytes encoded within the Data Matrix Code
////////   * @throws FormatException if the Data Matrix Code cannot be decoded
////////   * @throws ChecksumException if error correction fails
////////   */
////////  public DecoderResult decode(boolean[][] image) throws FormatException, ChecksumException {
////////    int dimension = image.length;
////////    BitMatrix bits = new BitMatrix(dimension);
////////    for (int i = 0; i < dimension; i++) {
////////      for (int j = 0; j < dimension; j++) {
////////        if (image[i][j]) {
////////          bits.set(j, i);
////////        }
////////      }
////////    }
////////    return decode(bits);
////////  }
////////
////////  /**
////////   * <p>Decodes a Data Matrix Code represented as a {@link BitMatrix}. A 1 or "true" is taken
////////   * to mean a black module.</p>
////////   *
////////   * @param bits booleans representing white/black Data Matrix Code modules
////////   * @return text and bytes encoded within the Data Matrix Code
////////   * @throws FormatException if the Data Matrix Code cannot be decoded
////////   * @throws ChecksumException if error correction fails
////////   */
////////  public DecoderResult decode(BitMatrix bits) throws FormatException, ChecksumException {
////////
////////    // Construct a parser and read version, error-correction level
////////    BitMatrixParser parser = new BitMatrixParser(bits);
////////    Version version = parser.getVersion();
////////
////////    // Read codewords
////////    byte[] codewords = parser.readCodewords();
////////    // Separate into data blocks
////////    DataBlock[] dataBlocks = DataBlock.getDataBlocks(codewords, version);
////////
////////    int dataBlocksCount = dataBlocks.length;
////////
////////    // Count total number of data bytes
////////    int totalBytes = 0;
////////    //for (DataBlock db : dataBlocks) {
////////    for(int i=0;i<dataBlocks.length;i++){
////////      totalBytes += dataBlocks[i].getNumDataCodewords();
////////    }
////////    byte[] resultBytes = new byte[totalBytes];
////////
////////    // Error-correct and copy data blocks together into a stream of bytes
////////    for (int j = 0; j < dataBlocksCount; j++) {
////////      DataBlock dataBlock = dataBlocks[j];
////////      byte[] codewordBytes = dataBlock.getCodewords();
////////      int numDataCodewords = dataBlock.getNumDataCodewords();
////////      correctErrors(codewordBytes, numDataCodewords);
////////      for (int i = 0; i < numDataCodewords; i++) {
////////        // De-interlace data blocks.
////////        resultBytes[i * dataBlocksCount + j] = codewordBytes[i];
////////      }
////////    }
////////
////////    // Decode the contents of that stream of bytes
////////    return DecodedBitStreamParser.decode(resultBytes);
////////  }
////////
////////  /**
////////   * <p>Given data and error-correction codewords received, possibly corrupted by errors, attempts to
////////   * correct the errors in-place using Reed-Solomon error correction.</p>
////////   *
////////   * @param codewordBytes data and error correction codewords
////////   * @param numDataCodewords number of codewords that are data bytes
////////   * @throws ChecksumException if error correction fails
////////   */
////////  private void correctErrors(byte[] codewordBytes, int numDataCodewords) throws ChecksumException {
////////    int numCodewords = codewordBytes.length;
////////    // First read into an array of ints
////////    int[] codewordsInts = new int[numCodewords];
////////    for (int i = 0; i < numCodewords; i++) {
////////      codewordsInts[i] = codewordBytes[i] & 0xFF;
////////    }
////////    int numECCodewords = codewordBytes.length - numDataCodewords;
////////    try {
////////      rsDecoder.decode(codewordsInts, numECCodewords);
////////    } catch (ReedSolomonException rse) {
////////      throw ChecksumException.getChecksumInstance();
////////    }
////////    // Copy back into array of bytes -- only need to worry about the bytes that were data
////////    // We don't care about errors in the error-correction codewords
////////    for (int i = 0; i < numDataCodewords; i++) {
////////      codewordBytes[i] = (byte) codewordsInts[i];
////////    }
////////  }
////////
////////}
